ABB MMCO-2 - Page 4

I
.
L
.
41
-
121.2
outputs
except
the
Alarm
output
(
2.4
above
)
.
A
pen
or
other
slender
object
is
required
to
push
this
button
(
prevents
accidental
activation
)
.
may
be
erased
by
pushing
this
button
for
6
sec
-
onds
.
3
.
“
TRIP
TEST
”
button
(
SW
5
)
.
This
button
causes
the
relay
to
trip
,
activating
all
3
.
CHARACTERISTICS
Meets
all
applicable
ANSI
C
37.90
and
IEC
255
stds
.
Standards
-
20
to
+
55
deg
.
C
(
operating
)
-
40
to
+
70
deg
.
C
(
storage
)
Temperature
Range
50
Hz
or
60
Hz
(
selectable
)
Frequency
Time
Delay
Pickup
Settings
5
Amp
ct
0.5
Amps
to
12
Amps
in
1
.
Amp
steps
01
Amps
to
2.4
Amps
in
.
01
Amp
steps
1
Amp
ct
5
%
for
TD
setting
5
%
for
IT
setting
Pickup
Accuracy
Seven
sets
of
time
curves
from
CO
-
2
to
CO
-
11
.
Each
set
includes
63
curves
.
(
See
Table
2
and
Figures
4
thru
10
)
inverse
Curves
(
U
.
S
.
A
.
version
)
Three
sets
of
time
curves
,
IEC
-
A
,
IEC
-
B
and
IEC
-
C
.
Each
set
includes
63
curves
.
(
See
Table
3
and
Figures
11
thru
13
.
)
Inverse
Curves
(
IEC
version
)
At
5
times
pickup
10
%
or
3
cycles
whichever
is
greater
A
At
20
times
pickup
10
%
or
3
cycles
whichever
is
greater
A
A
NOTE
:
10
ms
pickup
time
must
be
added
to
curves
for
TDTRIP
output
relay
.
Timing
Accuracy
Dropout
Ratio
(
Time
delay
&
Inst
,
contacts
)
98
%
Min
.
TRIP
Reset
Time
2.5
cycles
typical
3.5
cycles
max
.
.
5
A
dc
current
minimum
required
thru
TRIP
contact
circuits
to
Seal
-
in
TRIP
con
-
tacts
and
TRIP
LED
TRIP
Seal
-
In
Current
Pickup
(
with
5
Amp
ct
)
:
1
Amp
to
127
Amps
in
1
Amp
steps
.
Instantaneous
Unit
Pickup
(
with
1
Amp
ct
)
:
0.2
Amps
to
25.5
Amps
in
.
1
Amp
steps
.
Pickup
Settings
Maximum
Pickup
time
:
1.5
cycles
@
current
=
3
x
pickup
2
cycles
@
current
=
2
x
instantaneous
setting
4
cycles
@
current
=
1.2
x
instantaneous
setting
Trip
Contacts
N
.
O
.
contact
for
time
delay
trip
N
.
O
.
contact
for
instantaneous
trip
N
.
C
.
contact
(
contact
closed
if
loss
of
power
or
self
-
check
failure
)
Alarm
Contact
Annunciator
Contacts
N
.
O
.
contact
for
time
delay
trip
N
.
O
.
contact
for
instantaneous
trip
4
Courtesy of NationalSwitchgear.com